Opal gasoline, commonly referred to simply as Opal fuel, is a specialized low-aromatic unleaded petrol distributed primarily in select remote regions of Australia. It looks, smells, and performs identically to standard regular unleaded petrol in combustion engines, but its chemical makeup has been altered to remove specific volatile aromatic compounds. This targeted chemical adjustment prevents individuals from experiencing intoxicating highs if the fuel is deliberately inhaled, making it an essential public health intervention tool. At the same time, it fully satisfies the energy requirements of standard motor vehicles, boats, and small machinery without requiring any mechanical modifications or performance compromises.